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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation.
*
* This source code is subject to terms and conditions of the Microsoft Public License. A
* copy of the license can be found in the License.html file at the root of this distribution. If
* you cannot locate the Microsoft Public License, please send an email to
* ironruby@microsoft.com. By using this source code in any fashion, you are agreeing to be bound
* by the terms of the Microsoft Public License.
*
* You must not remove this notice, or any other, from this software.
*
*
* ***************************************************************************/
using System;
using System.Diagnostics;
using Microsoft.Scripting.Runtime;
using System.Threading;
using IronRuby.Runtime;
namespace IronRuby.StandardLibrary.Threading {
// Synchronized queue.
[RubyClass]
public class SizedQueue : RubyQueue {
private int _limit;
public SizedQueue([DefaultProtocol]int limit) {
_limit = limit;
}
public SizedQueue() {
}
private void Enqueue(object value) {
lock (_queue) {
_waiting++;
try {
while (_queue.Count == _limit) {
Monitor.Wait(_queue);
}
} finally {
_waiting--;
}
_queue.Enqueue(value);
Debug.Assert(_queue.Count <= _limit);
Monitor.PulseAll(_queue);
}
}
[RubyMethod("initialize", RubyMethodAttributes.PrivateInstance)]
public static SizedQueue/*!*/ Reinitialize(SizedQueue/*!*/ self, [DefaultProtocol]int limit) {
SetLimit(self, limit);
return self;
}
[RubyMethod("max")]
public static int GetLimit(SizedQueue/*!*/ self) {
return self._limit;
}
[RubyMethod("max=")]
public static void SetLimit(SizedQueue/*!*/ self, [DefaultProtocol]int limit) {
self._limit = limit;
}
[RubyMethod("enq")]
[RubyMethod("push")]
[RubyMethod("<<")]
public static SizedQueue/*!*/ Enqueue(SizedQueue/*!*/ self, object value) {
self.Enqueue(value);
return self;
}
[RubyMethod("deq")]
[RubyMethod("pop")]
[RubyMethod("shift")]
public static object Dequeue(SizedQueue/*!*/ self, [NotNull]params object[]/*!*/ values) {
// TODO:
if (values.Length != 0) {
throw new NotImplementedException();
}
return self.Dequeue();
}
}
}
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